1172 SAIL66, a next generation of T cell engager targeting CLDN6, potentiates efficacy by Hiroyuki Aburatani, Mika Kamata-Sakurai, Shinya Ishii, Takayuki Kamikawa, Naoki Kimura, Masaru Muraoka, Kenji Taniguchi, Ryo Uchikawa, Moe Yoshimoto, Momoko Okuda-Miura, Sho Akai, Tatsushi Kodama, Hirofumi Sakumoto, Shigeto Kawai, Mei Shimada, Takehisa Kitazawa, Tomoyuki Igawa